The idea of the atomic Clock was first proposed in the year 1945 by a physics professor of the Columbia University named Isidor Rabi. He suggested that a clock could be devised using a technique known as the atomic beam magnetic resonance which he had developed in the 1930s.The world’s first atomic clock which utilized the vibrations of ammonia molecules was subsequently introduced in the year 1949 by the National Bureau of Standards (NBS). Later […]